.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-start {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
.f12 {
  font-size: 12px;
}
